Williams Gun Sight Corporations receiver sight for the Marlin centerfire lever action models, uses two rear scope mount holes. Model 1894 requires hammer extension. Internal micrometer adjustments have positive click adjustments. Comes with one 3/8" diameter knurled aperture with a .093" peep. The FP is strong, rugged and dependable. The blue- black anodizing produces a long lasting no rust finish. The alloy used to manufacture this sight has a tensile strength of 85,000 pounds. Yet, the FP is light and compact weighing only 1 1/2 ounces. Many rifles are now being drilled and tapped at the factory for installation of the FP. Please be aware that some rifles may require drilling and tapping for installation.

WARNING: Discharging firearms in poorly ventilated areas, cleaning firearms
or handling ammunition may result in exposure to lead and other substances known
cause birth defects, reproductive harm and other serious physical injury. Have adequate
ventilation at all times. Wash hands thoroughly after exposure.

Melting lead and casting lead objects will expose you and others in the area to
lead, which is known to cause birth defects, other reproductive harm and cancer.